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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Desenvolvimento e produtividade de mandioca cultivada em diferentes sistemas de plantio e intervalos entre capinas
Get PDFCompetition exerted by weeds is one of the main limitations when producing cassava,
therefore, the use of no-till systems, with the conservation of straw on the soil, shows to be an
alternative to reduce the establishment weeds, however this system may interfere in the
development of cassava roots. The main goal with this work was to measure the influence of
different farming systems and the levels of weed control on the productivity of cassava. A
field experiment in randomized blocks subdivided into plots with four replicates was
developed. Two different farming systems were used in the plots (no-till and conventional)
and in the subplots the weed control levels were allocated, with weed control happening every
30, 60, 90 and 120 days after planting (DAP). Two control-plots were also cultivated during
the whole development cycle of cassava, one with daily weed control and one without weed
control. The evaluated variables were plant height, stem diameter, final plant stand, shoot
fresh mass, starch content, harvest index, number, length and diameter of roots, noncommercial root yield, commercial root yield and total yield. Phytosociological analyzes were
carried out in the weed community, in which the number of weeds (Mi ha-1), shoot dry mass
(Kg ha-1), frequency, relative frequency, density, relative density, relative dominance,
importance value index and relative importance were evaluated. The increase in the interval
between weed controls decreased the height and the diameter of the stem, as well as the fresh
shoot mass, starch content, number, length and diameter of roots and the total cassava
productivity. The productivity of the crop was lower in the no-till farming system. Weed
control performed every 30 days and the daily weed control provided the highest productivity
of the crop. Increasing the interval between weed controls, generally, increased the number
and the shoot dry mass of weeds. In the phytosociological survey, 33 species distributed in 16
botanical families were quantified. The species, Spermacoce latifolia, Sida rhombifolia,
Avena sativa, Lolium multiflorum and Maranta sobolifera, presented high relative
importance. Strategies should be developed for the effective control of these weeds when
present in cassava fields in order to avoid high yield losses.Um dos principais limitantes da produ??o de mandioca ? a competi??o exercida pelas plantas
daninhas, sendo o plantio direto, com manuten??o de palhada sobre o solo, uma alternativa
para reduzir o estabelecimento das mesmas, por?m esse sistema pode interferir no
desenvolvimento das ra?zes da cultura. Objetivou-se, com esse trabalho, mensurar a influ?ncia
de diferentes sistemas de plantio e n?veis de controle de plantas daninhas sobre a
produtividade da cultura da mandioca. Para isso foi desenvolvido um experimento a campo, o
delineamento utilizado foi blocos casualizados com parcelas subdivididas, com quatro
repeti??es. Nas parcelas foram alocados dois sistemas de plantio, direto e convencional, nas
subparcelas foram alocados os n?veis de controle de plantas daninhas, com capinas a cada 30,
60, 90 e 120 dias ap?s o plantio (DAP), mais uma testemunha sempre capinada e uma
testemunha com competi??o durante todo o ciclo da cultura. As vari?veis avaliadas foram a
altura de planta, di?metro de caule, estande final de plantas, massa fresca da parte a?rea, teor
de amido, ?ndice de colheita, n?mero, comprimento e di?metro de ra?zes, produtividades de
ra?zes n?o comerciais, produtividade de ra?zes comercias e produtividade total. Foram
realizadas an?lises fitossociol?gicas na comunidade infestante onde foram mensurados o
n?mero de plantas daninhas (Mi ha-1), massa seca da parte a?rea de plantas daninhas (kg ha-1),
frequ?ncia, frequ?ncia relativa, densidade, densidade relativa, domin?ncia relativa, ?ndice de
valor de import?ncia e import?ncia relativa. O aumento do intervalo entre as capinas diminuiu
a altura e o di?metro do caule, a massa fresca da parte a?rea, o teor de amido, o n?mero o
comprimento e o di?metro de ra?zes e a produtividade total da mandioca. No plantio direto
houve menor produtividade da cultura. As capinas realizadas a cada 30 dias e a testemunha
sempre capinada proporcionaram a maior produtividade da cultura. O aumento do intervalo
entre as capinas de modo geral aumentou o n?mero e massa seca das plantas daninhas. No
levantamento fitossociol?gico foram quantificadas 33 esp?cies distribu?das em 16 fam?lias
bot?nicas. As esp?cies, Spermacoce latifolia, Sida rhombifolia, Avena sativa, Lolium
multiflorum e Maranta sobolifera, apresentaram elevadas import?ncias relativas. Deve se
criar estrat?gias para o controle efetivo dessas esp?cies daninhas quando presentes em
plantios de mandioca a fim de evitar perdas elevadas de produtividade
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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